In Exercise find the required linear model as follows: If you do not have a graphing calculator or spreadsheet program, use the first and last data points to determine a line. If you do have a graphing calculator or spreadsheet program, find the least-squares regression line.
Business The accompanying table shows the daily newspaper circulation (in millions):
Year | Circulation |
1990 | 62.3 |
1995 | 58.2 |
2000 | 55.8 |
2001 | 55.6 |
2002 | 55.2 |
2003 | 55.2 |
2004 | 54.5 |
2005 | 53.3 |
(a) Find a linear model for the data, with x = 0 corresponding to 1990.
(b) Assuming the trend continues indefinitely, estimate the circulation in 2010 and 2012.
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